Bug 2507986

Summary: CVE-2026-18047 dogtag-pki: pki: ACME admin enable/disable endpoint authentication bypass via trailing slash [fedora-all]
Product: [Fedora] Fedora Reporter: Samuele Negrini <snegrini>
Component: dogtag-pkiAssignee: Endi Sukma Dewata <edewata>
Status: NEW --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: abokovoy, cfu, edewata, jmagne, mfargett
Target Milestone: ---Keywords: Security, SecurityTracking
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Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["e431dc08-fd88-4b4c-a63c-70d4a9fcc178"]}
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On:    
Bug Blocks: 2507956    

Description Samuele Negrini 2026-07-28 12:40:38 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

A flaw was found in Dogtag PKI's ACME responder. The web.xml security constraints protecting the admin-only /v1/enable and /v1/disable endpoints use exact URL pattern matching (/v1/enable and /v1/disable). Due to a path normalization inconsistency between Tomcat's security constraint matching (which requires exact path match per Servlet spec §12.2) and RESTEasy's JAX-RS path routing (which normalizes trailing slashes), a request to /v1/enable/ bypasses the authentication constraint while still being routed to ACMEEnableService.handlePOST(). Neither ACMEEnableService nor ACMEDisableService performs application-level authorization checks — they directly call database.setEnabled(true/false). An unauthenticated remote attacker can exploit this to enable or disable ACME services, allowing persistent denial of service by repeatedly disabling the service, or re-enabling a service that was intentionally disabled by an administrator.
Comment 1 Marco Fargetta 2026-07-28 14:41:49 UTC 
Upstream fix: https://github.com/dogtagpki/pki/pull/5406